FS-70U Pump Holder Gasket - OS44714200 by O.S. Engine  [OS44714200]

Replacement pump holder gasket for FS-70U

This pump holder gasket is an RC engine replacement part made for FS-70U units. It forms the sealing interface between the pump assembly and the engine housing to maintain correct fuel flow and prevent leaks that can upset run consistency.

For best results inspect mating surfaces for old gasket residue, make sure the pump sits evenly, and avoid over-torquing bolts that can deform the gasket. The part is intended to preserve sealed connections and is not a performance modifier.

Treat this gasket as a consumable during scheduled engine servicing. When properly seated it supports steady fuel delivery under normal RC operating conditions and reduces variables while adjusting needle settings or diagnosing fuel issues.